Dealing with Lupus Nephritis Diagnosis: Need Advice

Hi all…I’m mentally taking a toll with all the info given to me by doctors and research online. A lot has been back and forth and I just got diagnosed 4-5 days ago with Lupus nephritis. My main concerns are as follows if anyone has any advice or input please❤️ (Also I’m 24 if anyone can relate by age) 1. How do you maintain muscle or mass to be able to do all the sports/hobbies you like to do? Especially with lack of protein intake 2. Any hopes that I’ll live a long healthy life if I maintain this renal diet?…how fast can you jump from stage 3 to 4 3. I’m taking so many meds that are really screwing with my energy and happiness, is this for months? Years? Life? 4. Do you still enjoy a French fry from time to time?… any small bite of the things you used to love to eat? Thank you!